Demountable rim for auto-wheels.



'G. L. SUMMERS. DEMOUNTABLE HIM FOR AUTO WHEELS. APPLICATION men mama. 1918.

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13 1114 can a WWZA WM /QM gig GEORGE- L. sUMMnRs, on EU NTIIN'GTON, WEST VIRGINIA.

' DEMOUNTATBLE RIM FORIAUTO-WHEELS.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Application filed March 8, 1918. Serial No. 221,125.

To all whom it may concern.

Be it known that I, GEORGE SUMMERS, a

' citizen of the United States, residing at Huntington, in the county of Cabell, State of West Virginia, have invented a new and useful Demountable Rim for Auto-Wheels; and .I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention'relates to an improved demountable rim for automobile wheels, and one of the objects of the invention is to provide a simple, efficient and practical structure of this kind, whereby one rim may be easily replaced by another.

A further object of the invention is the provision of an improved demountable rim having efiicient means for locking the rim to the fixed rim of the wheel, thereby preventing creeping of the rim when the wheel is in motion.

A further object of the invention is to provide a grooved fixed rim, provided in its groove with transverse members disposed at spaced intervals and having inclined faces, which constitute the bottoms of dove-tail recesses of said members, which recesses receive projections on the inner face of the demountable rim. whereby the rim and the fixed rim are locked together.

. A further object of the invention is the provision of cutaway portions of the outer flange of the fixed rim, to permit the projections on the rim to pass, whereby the rim may he slipped on the fixed rim, subsequently to which the rim is given a partial turn thereby causing the inclined faces of said projections and the inclined faces of the dove-tail recesses to bind, there being means assing radially through the fixed rim and e projected behind said projectlons for locking the demountable rim on the fixed rim and the rim.

In practical fields the details of construe! tion may necessitate alterations falling w1thin the scope of what is clamied.

The invention comprises further features and combination of parts as hereinafter set forth, shown 1n the drawings and claimed.

In the drawin Figure 1 is anew in side elevation of an automobile wheel, showing the improved demountable rim as applied thereto.

prevent retrograde movement of the felly- Fig. 2 is a view of a wheel, showing the spokes and the hub in elevation, and the fiXed rim and the demountable rim (on which the outer casing of the tire is mounted in elevation) in section.

Fig. 3 is a sectional view on line 33 of Fig. 1

Fig. 4: is a sectional view on line 44 of Fig. 1.

Fig. 5 is a detail perspective view of a section of the fixed rim of the wheel, showmg the transverse members and the dove tail recess.

Fig. 6 is a detail perspective view of a sect1on of the demountable'rim, showing one of said projections to cotipera'te'with verse member of the fixed rim. Referring'more especially to the 'drawlugs, 1 designates a hub, which is provided with the usual spokes 2, which in turn are secured in any suitable manner as shown at 3 to the fixed rim 4. The outer face of is provided with an annular groove 5. The outer flange 6 (which forms one side wall of the groove 5) of the fixed rim is provided with a series of cutaway portions 7, which are arranged at spaced intervals. Also'arranged at spaced intervals and transversely of the groove 5 are transverse members or ribs provided with dove-tail recesses 9. The inner face of the demountable rim 10 is provided "with elongated ribs 11 having their lengths extending concentrically with the center of the wheel. These ribs 11 are constructed to dove tail intothe recesses 9 and assume positions at right angles to the members 8. The ribs 11 are arranged at spaced intervals to correspond with the arrangement of the cutaway portions 7, in order to pass through said cutaway portions, whereby. the rim maybe slipped or fitted on the fixed rim. The bot toms of the dove-tail recesses 9 and the faces of the ribs 11 are so inclined as shown in Fig. 2 as to insure a wedginglock between the demountable rim and the fixed rim. In

the transorder to make a wedging lock between the bottoms of the recesses 9 and the ribs 11 a partial turn is imparted to the demountable rim 10 in the direction of the arrow a. Threaded radially through the fixed rim diametrically opposite each other and adjacent diametr'c opposite cutaway portions 7 are winged sc'; ews 12, the outer extremities of which engage behind the ends 13 of two diametrically opposite ri s 11, thereby preventing ratrog .ablOIl of the rim after it has having cutaway portions arranged at spaced oncereceived its partial turn to retainits intervals, of a rim engaglng the-marginal wedging-lock. The fixed rim 4 is provided cylindrical edges of said flange?1 and being with the usual opening 15, for the reception firmly supported thereby, said 6 annel hav of the conventional form of inflating tube ing at spaced intervals and adjacent said 150i the tire. A suitable band 16 is riveted cutaway portions transverse ribs, each of or otherwise secured at 17 to the rim 10. which being provided with a dove-tail re The outer edge of this band is provided cess, having its bottom inclined in a direcwith the usual clencher flange 18. Secured tion opposite to the rotation of the wheel, 1 at 19 to the inner edge of the rim" 10 is a the inner-circumference of the second rim ring 20, which is provided with a clencher having at spaced intervals dove-tail ribs flange 21. These clencher flanges 21 and having their inner faces inclined in the] di- 18 are designed to be engaged by the usual rection of the rotation of the wheel, and clencher ribs 22 of the outer tire casing 23, adapted to engage said dove-tail recesses,

. which receives the inner inflated tube 24. the inclinedbottoms of the recesses and the It is to be seen that a wheel equipped with inclined faces of the second ribs acting to a demountable rim constructed as shown prevent displacement of the second rim in as described, a punctured tire may be easily one direction, screws carried by the fixed removed togetherwith the demountable rim, rim radially and havin their ends engagin case the tire is punctured, and another ing behind the second ri s, thereby preventrim applied, which carried an additional ing displacement of the second run 111 the tire. The outer edge of the demountable opposite direction, said cutaway. portions rim is provided with diametrically oppoconstituting means permittin of the passitely disposed lugs 25, which are designed sage-of the second ribs when t elsecond'rim to be struck by a hammer or the like, to is slipped "onthe fixed rim. v wedge the rim in place or to remove the In testimony whereof I have signed my same. name to this specification in the presence of The invention having .beenset forth what two subscribing witnesses.

is claimed as new and useful 1s: Thecombination with a: fixed rim having GEORGE SUMMERS its outer face provided with an annular Witnesses:

channel, and ad1oining side flanges forming CHAS. G. Rnolms, the walls of said channel, the outer flange CECIL WnmA us. 

